Its county seat is San Antonio, the second-most populous city in Texas and the seventh-largest city in the United States. Bexar County is included in the San Antonio-New Braunfels, TX metropolitan statistical area. Bexar county includes Government Canyon state natural area in northwestern part of the county.
If the screen width is 7 feet and the projector's throw ratio is 2.0 - 2.4:1 (because projectors have zoom lenses, they also have a range of throw ratios) then you can place your projector anywhere from 14 to 16.8 feet away from the screen.
There are four basic kinds of images you can show on a projector: data, video, photos, and games. Any projector can show any kind of image, but it's important to understand that any given projector can handle one kind of image well without necessarily doing a good job on other kinds. Naturally, you'll want a projector that does a good job with the kind of images you plan to show. Most models are sold either as data or business projectors, or as home theater, home entertainment, or video projectors.